Reference array



FIG. 1 is a perspective view of a reference array showing our newdesign.

FIG. 2 is a front view thereof.

FIG. 3 is a rear view thereof; and,

FIG. 4 is a left side view thereof.

The broken lines immediately adjacent the shaded areas represent thebounds of the claim, while all other broken lines are directed toenvironment and are for illustrative purposes only; the broken linesform no part of the claimed design.

CLAIM The ornamental design for a reference array, as shown anddescribed.